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Two magnet of equal mass are joined at r...

Two magnet of equal mass are joined at right angles to each other as shown the magnet 1 has a magnetic moment 3 times that of magnet 2. This arrangment is pivoted so that it is free to rotate in the horizontal plane. In equilibrium what angle will the magnet 1 subtend with the magnetic meridian?

A

`tan^(-1) ((1)/(2))`

B

`tan^(-1) ((1)/(3))`

C

`tan^(-1) (1)`

D

`0^(@)`

Text Solution

Verified by Experts

The correct Answer is:
B
`M_(1)B_(H) sin theta= M_(2)B_(H) sin (90- theta)`
`rArr tan theta= (M_(2))/(M_(1))= (M)/(3M) = (1)/(3) rArr theta= tan^(-1) ((1)/(3))`
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